Pipe cleaning apparatus



FIG. 1 is a front perspective view of a pipe cleaning apparatus showing our new design;

FIG. 2 is a rear perspective view thereof,

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is top view thereof; and,

FIG. 8 is a bottom view thereof.

The broken line boundary and area within it defines a portion of the pipe cleaning apparatus that forms no part of the claimed design. 

The ornamental design for a pipe cleaning apparatus, as shown and described. 